Prosthetic tissue valve



FIG. 1 is a perspective view of my design for a prosthetic tissue valve;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational viewthereof being identical to said front elevational view; and,

FIG. 5 is a top elevational view thereof, the bottom elevational viewthereof being identical to said top elevational view.

CLAIM I claim the ornamental design for a prosthetic tissue valve, asshown and described.